/Engine/Plugins/Runtime/nDisplay/Source/DisplayCluster/Public/Render/Viewport/IDisplayClusterViewport.h
const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< class [IDisplayClusterProjectionPolicy](API\Plugins\DisplayCluster\Render\Projection\IDisplayClusterProjectionPolicy), ESPMode::ThreadSafe > & GetProjectionPolicy() const